rdar://problem/10652076

Add logic to GDBRemoteRegisterContext class to be able to read/write a "composite" register
which has "primordial" registers as its constituents.  In particular, Read/WriteRegisterBytes()
now delegate to Get/SetPrimordialRegister() helper methods to read/write register contents.

Also modify RegisterValue class to be able to parse "register write" string value for the
NEON quadword registers which is displayed as a vector of uint8's.

Example:

(lldb) register write q0 "{0x01 0x02 0x03 0x04 0x05 0x06 0x07 0x08 0x09 0x0a 0x0b 0x0c 0x0d 0x0e 0x0f 0x10}"
(lldb) register read q0
q0 = {0x01 0x02 0x03 0x04 0x05 0x06 0x07 0x08 0x09 0x0a 0x0b 0x0c 0x0d 0x0e 0x0f 0x10}
(lldb) register read --format uint8_t[] s0
s0 = {0x01 0x02 0x03 0x04}
(lldb) register read --format uint8_t[] d0
d0 = {0x01 0x02 0x03 0x04 0x05 0x06 0x07 0x08}
(lldb) register read --format uint8_t[] d1
d1 = {0x09 0x0a 0x0b 0x0c 0x0d 0x0e 0x0f 0x10}

llvm-svn: 151939

1 files changed, 8 insertions, 1 deletions

diff --git a/lldb/source/Plugins/Process/gdb-remote/GDBRemoteRegisterContext.h b/lldb/source/Plugins/Process/gdb-remote/GDBRemoteRegisterContext.h
index 9f96e77cb54..257baf4df83 100644
--- a/lldb/source/Plugins/Process/gdb-remote/GDBRemoteRegisterContext.h
+++ b/lldb/source/Plugins/Process/gdb-remote/GDBRemoteRegisterContext.h
@@ -21,7 +21,7 @@
 #include "lldb/Core/ConstString.h"
 #include "lldb/Core/DataExtractor.h"
 #include "lldb/Target/RegisterContext.h"
-
+#include "GDBRemoteCommunicationClient.h"
 
 class ThreadGDBRemote;
 class ProcessGDBRemote;
@@ -246,6 +246,13 @@ protected:
     bool m_read_all_at_once;
 
 private:
+    // Helper function for ReadRegisterBytes().
+    bool GetPrimordialRegister(const lldb_private::RegisterInfo *reg_info,
+                               GDBRemoteCommunicationClient &gdb_comm);
+    // Helper function for WriteRegisterBytes().
+    bool SetPrimordialRegister(const lldb_private::RegisterInfo *reg_info,
+                               GDBRemoteCommunicationClient &gdb_comm);
+
     //------------------------------------------------------------------
     // For GDBRemoteRegisterContext only
     //------------------------------------------------------------------